Well here a few things I noticed:
1. you should use a gray background (or the background your game actually uses) because you can choose colors easier that way.
2. the dithering on the shield looks kinda weird as it doesn't match with a normal shields shading.
3. The position itself looks too stiff (or at least I think so)
4. The line you made with the darkest skin color looks kinda weird. (the dark blue line on the back as well)
5. I can't really tell what gender this person is lol
6. Has this person only 1 foot?
Hope this helps I would love to see a enhanced version of this